A gemstone is the naturally occurring crystalline form of a mineral, which is desirable for its beauty, valuable in its rarity, and durable enough to be enjoyed for generations. They come in a wide variety of colors and shapes, and are divided into two categories - precious and semiprecious. The value depends on four factors: the beauty of the gemstone, its rarity, its hardness, and the manner in which it is cut and polished.

Learn more about caring for your special gems.

Gemstone Families:

1. Beryl Aquamarine Emerald 2. Chalcedony - Microcrystalline Quartz Agate Aventurine Carnelian Chrysoprase Jasper Onyx/Sardonyx 3. Corundum Ruby Sapphire 4. Diamond 5. Feldspar Amazonite Labradorite Moonstone Sunstone 6. Garnet Almandite Garnet Grossular Garnet Rhodolite Garnet Spessartite Garnet 7. Lapis Lazuli 8. Opal Common Opal Fire Opal Precious Opal

9. Peridot 10. Quartz - Macrocrystalline Quartz Amethyst Ametrine Citrine Crystal Quartz Rose Quartz Smoky Quartz 11. Spinel 12. Topaz 13. Tourmaline 14. Turquoise 15. Zoisite Tanzanite 18. Other Gemstones Apatite Calcite Fluorite Hematite - Hematine Iolite Jade Kyanite Malachite Obsidian Rhodocrosite Rhodonite - Massachusetts State Stone Sodalite Zircon